[Fix #210] Add new command projectile-find-tag
* projectile.el: Fixed projectile-find-tag in projectile-mode-map.
Merge pull request #212 from nwidger/master

* projectile.el: Fixed projectile-find-tag in projectile-mode-map.
[Fix #211] Use buffer-local tags-table
Add new commands 'projectile-switch-to-buffer-other-window and
'projectile-find-file-other-window, bound to C-c p 4 b and C-c p 4 f by
default.
* CHANGELOG.md: Added new commands
  'projectile-switch-to-buffer-other-window and
  'projectile-find-file-other-window
Merge pull request #213 from nwidger/master

Add 'projectile-switch-to-buffer-other-window and 'projectile-find-file-other-window
Make find-file-hooks buffer local

This could be problematic in certain edge cases (like visiting files in
the project in which projectile-mode is not enabled), but is saner and cleaner.